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A certain region of soap bubble reflects red light of wavelength 650nm in vaccum.What is the minmimum thickness that this region of the bubble could have? Take μ=1.41

A certain region of soap  bubble reflects red light of wavelength 650nm in vaccum.What is the minmimum thickness that this region of the bubble could have?
Take μ=1.41

Grade:12

2 Answers

renu akunuri
37 Points
9 years ago

ans : 0.35x10-6 meters

{formula is 2ud=(n+1/2)xwave length} take n=1 because minimum thickness we need

Anirban Mukherjee
47 Points
9 years ago

But the answer is 1.2 * 10^(-7) m

Your ans is wrong @ renu

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